Laboratory products
Simplified Automated Solid Phase Extraction
Feb 18 2010
Presearch in conjunction with SGE introduces a new tool for on-line sample preparation: Micro Extraction by Packed Sorbent (MEPS) is a new development in the field of sample preparation by SPE (solid phase extraction). MEPS performs the same function as SPE, namely the purification or speciation of samples, but has some significant differences:
• MEPS saves labour time
• MEPS allows SPE methodology to be applied to small sample volumes (down to 10 μl)
• MEPS can be integrated into autosampler robotics and allows on-line use of SPE.
• MEPS can reduce sample and reagent consumption and waste disposal.
• MEPS is field portable for remote sampling with or without the use of automated equipment
Automation
The advantage of MEPS lies in the ability to prepare and inject samples online using a single device. This reduces sample processing times and any intervention by the operator. The typical lifetime is about 40 – 100 samples, depending on the sample matrix. The small quantity of phase in the BIN can be easily washed between samples and thus avoids carry-over of sample.
MEPS is available in a variety of common SPE phases (reversed phase, normal phase and ion-exchange phase).The dimensions of the sorbent bed ensure that the sorbent performance remains identical to conventional SPE devices and therefore an easy down-scaling can be performed.
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